how to fix P0174 code in Ford Explorer Sixth Generation (2020-present)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the ignition is off.
• Disconnect the battery to ensure safety while working on the electrical components.

2. Inspect Vacuum Lines

• Tools Required: Visual inspection tools, flashlight
• Check all vacuum hoses connected to the intake manifold for any cracks or disconnections.
• Replace any damaged hoses with new ones.
• Reconnect any loose hoses securely.

3. Clean or Replace Mass Air Flow (MAF) Sensor

• Tools Required: MAF cleaner, screwdriver
• Locate the MAF sensor on the intake duct.
• Disconnect the electrical connector and the mounting screws.
• Remove the MAF sensor and clean it with specialized MAF cleaner.
• Allow it to dry completely before reinstalling.
• If cleaning does not resolve the issue, replace the MAF sensor.

4. Check Fuel System

• Tools Required: Fuel pressure gauge, multimeter
• Connect a fuel pressure gauge to the fuel rail and check for the manufacturer-specified fuel pressure.
• If the pressure is low, inspect the fuel pump and filter for issues.
• Check the fuel injectors for proper operation using a multimeter or by listening for clicking sounds when the engine is running.
• Replace any malfunctioning components.

5. Inspect Intake System

• Tools Required: Socket set
• Remove the intake manifold cover to inspect the intake gaskets for any signs of wear or leaks.
• Replace gaskets if they appear damaged.
• Check for any obstructions in the intake path.

6. Test Oxygen Sensors

• Tools Required: OBD-II scanner, multimeter
• Use the OBD-II scanner to check the live data of the oxygen sensors while the engine is running.
• Verify that the signals from the bank 2 oxygen sensor are within the normal range.
• If the sensor is faulty, replace it with a new one.